/*
 * Copyright (c) 2002-2009 Moxie Marlinspike
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */

#ifndef __RAW_BRIDGE_H__
#define __RAW_BRIDGE_H__

#include <boost/bind.hpp>
#include <boost/asio.hpp>
#include <boost/shared_ptr.hpp>

#include "Bridge.hpp"

using namespace boost::asio;

class RawBridge : public Bridge
{

private:
	int closed;
	boost::shared_ptr<ip::tcp::socket> clientSocket;
	ip::tcp::socket serverSocket;
	ip::tcp::endpoint destination;

	boost::asio::io_service &io_service;

	RawBridge(boost::shared_ptr<ip::tcp::socket> clientSocket,
	          ip::tcp::endpoint& destination,
	          boost::asio::io_service & io_service) :
		clientSocket(clientSocket), serverSocket(io_service),
		io_service(io_service), destination(destination), closed(0)
	{}

	void handleConnect(Bridge::ptr bridge, const boost::system::error_code &error)
	{
		if (!error) Bridge::shuttle(&(*clientSocket), &serverSocket);
		else        close();
	}

protected:
	virtual void processClientInput(char *buffer, int length) {}

public:

	static ptr create(boost::shared_ptr<ip::tcp::socket> clientSocket,
	                  ip::tcp::endpoint& destination,
	                  boost::asio::io_service & io_service)

	{
		return ptr(new RawBridge(clientSocket, destination, io_service));
	}

	virtual ip::tcp::socket& getClientSocket()
	{
		return *clientSocket;
	}

	virtual ip::tcp::socket& getServerSocket()
	{
		return serverSocket;
	}

	virtual void shuttle()
	{
		serverSocket.async_connect(destination, boost::bind(&RawBridge::handleConnect,
		                           this,
		                           Bridge::getSmartPointer(),
		                           placeholders::error));
	}

	virtual void close()
	{
		if (!closed) closed = 1;

		if (clientSocket->is_open())
		{
			clientSocket->cancel();
			clientSocket->close();
		}

		if (serverSocket.is_open())
		{
			serverSocket.cancel();
			serverSocket.close();
		}
	}
};



#endif
